IZPACK: OpenSource product which you can use to package and automate installs in your client’s computers.
- Cross-platform: it is Java; you only needs the JVM on the client.
- Translations: installation in some languages.
- Uninstaller: make the uninstall script at the same time.
- License: Warn for license type on installation.
No more zip packages with README.txt, if you want somebody automated your software installation.